One of the bones examined, (IMAGE) University of Bonn Caption the upper arm bone of a Diplodocus. The drill hole created during the removal of the fossil bone tissue sample is clearly visible. Credit (c) Martin Sander/Uni Bonn Usage Restrictions This image may be used together with the press release. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.